Milking-machine.



@d @Mq/01% PATBNTED DC. s1, 1907.'

A.,-H LoQvIsT. MILIHNG MACHINE.

APPLICATION FILED AUG. 3.1906.

4 SHBETB--SHBBT 1.

7. Ua o m 9 l H 0. m P u. M M ,7 E F. u U S 1 D 4 m T 'Il l m i 1w ml A P n" m 0 D. Efw m .New M MIG. ...wm WA wMm GP M ALM .1w MM P A om w, u M w D0 o o 0 t N n PATBNTEB 11110.31, 19,07. A. H. LoQVIsT. MILKING MACHINE.

APPLICATION FILED AUG' 3. 1906.

4 SHBETS-SHBBT 3.

vnr .wams run co., wAsmavmn. n. c.

No. 874,972, PATBNTBD DBG. a1, 1907. A. H. LoQvIsT. MILKING MACHINE.

APPLICATION FILED AUG.3.1906.

4 SHEETS-SHEET 4.

[nvenor WH. Laim All lthe machine, the pistons being shown in dif.V

UNITED sTATEs AUGUST HJ ALMAR LOQVIST,

oF SDERKPING, SWEDEN.

MILKING-MACHINE.

No. 874,972. specification of Letters Patent. Patented Dec. 31, 1907.

- Application filed August 3, 1906. Serial No. 328.993.

To all whom it may concern:

Be it known that I, AUGUST HJALMAR LOQvIsT, a subject of the King of Sweden, and resident of Sderkping, Sweden, have invented new and useful Improvements in Milking-Machines, of which the following is a specification, reference being had to the drawing accompanying and forming a par-t hereof.

This invention relates to milking-machines of the type in which each separate milking device is provided with a set of pistons or plungers adapted to be placed u to one of the teats for extracting the mill; from the udder, said pistons, when actuated, actingly successively upon the said teat from the root thereof toward its extremity so as to imitate the action of the fingers in common handmilking. f

The object of the invention is to so ar-z range the driving means as to make it possible to easily move all the pistons into their innermost ositions thereby enabling the machine to e more conveniently than otherwise placed in its working position -or to .be taken off from the teats after milking.

A further object of the invention is to provide means for adjusting the milking organs to different udders.

The invention, briefly, consists in a special driving lmeans for the pistons, said driving means consisting of a rotatable driving shaft carrying a number of disks or cams, one for each piston, each disk or cam being provided with two slots, cam grooves, or the like, one of which is eccentric to the driving shaft while the other is concentric to the said shaft, means being provided for causing the pistons to engage the eccentric cam groove, when the driving shaft is rotated in one direction for working, and to cause .the said pistons to engage the concentric slot when the driving shaft is rotated in the opposite direction for drawing the pistons into their innermost positions. A

The invention further, comprises the constructions hereinafter specifically described and pointed out in the claims.

Referring to the drawings, Figure 1 shows a side-elevation of a suitable 4form of vthe milking machine according to the present invention; Fig. 2 is a top plan-view of the machine; Figs. 3, 4 and 5.are vertical'sections of ferent positions; Figs. 6, 7 and 8 show the different positions of .the pistons according to Fig. 3 Figs. 9, 10 and 11 show, in the same manner, .the different ositionsof the pistons according to Fig. 4; Figs. 12, 13 and 12,1L show, in the same manner, the different positions shows a horizontal section of part lof the arrangement for adjusting `the milking organs to different udders; Fig. 16 shows another part of the same arrangement placed at the underside of .the apparatus, Iand Fig. 17 shows a side-view of A*the last-mentioned partly in vertical section.

The pistons -2 coated with rubber pads 1 in any suitable manner extendwith their ,piston rods 3 through the .wall of a cylndric casing 4 inclosing the driving means. ournaled-in the said casing is a vertical shaft 5 having at- Y tached to it ,threeslotted disks or cams .6, one

for each piston rod 3. The slots 7, -8 ofthe cams .are suitably arranged at the up er side provided with antifriction rollers. As lllustrated in the drawings, the slots 7 areeccentric, thereby causing the pistons and iston rods to move outward and inward w iereas the slots 8 ,are concentric with the driving shaft 5. :The rotation of theshaft 5, .or of the slotted disks or cams, during Working, takes place in the ldirection of the arrows in- 8 thereby that a tongue 10 is pivotally mounted, in the manner shown in the drawings, in one ofthe corners where the slots 8 and 7 pass into each other, said tongue :being springy in such amanner .as to cut o ff, during the said rotating movement, 4the inlet -to the slot 8. When vthe machine is-.to be removed from the teats, or applied thereto, vthe shaft with the disks is turnedin thezdirection opposite to that indicated by lthe arrows,.the ugs 9 thenentering the slots 8 throughfthe open ends'thereof, wherebyall thepistonsZ are drawn inwardly to their-innermost positions, as illustrated in IFig?, so `that gthe machine may .in aconvenent manner be taken off the teats, or appliedthereto as lthe case may be.

lhe shaft 5 receives motion from anysintable transnnssion device, .such as -.for y1nof the said cams. Projecting into t e slots are lugs 9 suitably located at .the inner ends of the piston rods 3, said lugs being suitably y dicated in the drawing. The vlugs 9 arev thereunder prevented ,from entering the slots of the pistons according -to Fig. 5; Fig. 1f5 i stance a flexible shaft or the`like, and the Inachine is hung in working position by means of straps placed over the rump of the cow and extending from arms 11 at the upper side of the machine.

The organs located outside the cy- .lindric casing 4 are connected to the casing, for the pur ose of allowing adjustment according to fl'erent udders, in such a manner as to be able to be swung in a direction toward or away from one another. To this end, the milking or ans are provided .with

extensions 12 suitab y in the shape of cylindric walls entering corresponding guides 15 suitably consisting of recesses between walls 13, or the like, constituting parts of, or connected in any suitable manner to the cylindric casing 4, so that the milking-organs can be swung away from and toward one another within certain limits and thus be adjusted to different udders.

The arrangement shown in Figs. 16 and 17 not only reaxiizes the hereinbefore described swinging motion of the milking organs but also their adjustment in radial directions. The four milking organs, one of which is shown in the drawing, are carried each by one arm 14. All these arms are ada ted not only to turn with their inner ends a out the common shaft but also to move in a radial direction in relation to the said shaft, vwhich passes through an oblong slot 15 in each of the said arms. Mounted loosely on the shaft 5 is a ratchet-wheel 16 engaging four spring pawls 17, each attached to one of the arms 14 in the manner indicated in the drawing. The ratchet-wheel 16 is made integral with a ratchet-wheel 18 engaged by a spring pawl -19 pivotally attached to the lever 2G, said lever eing adapted to be turned about the shaft 5 in that the lever extends from a collar 21' loosely mounted on the said shaft. Fixed to the lower lend of the shaft 5 is a ratchetwheel 22, engaged by a pawl 23 likewise pivotally attached to the lever. The pawl 23 is connected to a suitable releasin Jr device for the pawl, said releasing device being, however, not shown in the drawing.

The described arrangement works in the following manner. If the milking organs yare to be drawn inwardly from the position shown in Fig. 16 fi. e. if they are to be placed at shorter distances from one another, the lever 20 is swung to the side, so that the pawl 19 turns the wheels 18 and 19. The spring pawls 17 gripping in the latter then act to draw the arms 14, and thereby the milking organs, inwardly in radial directions. The outward movement of the milking organs is prevented by the pawl 23 which, by its engagement with the fixed ratchet-wheel 22,

prevents the lever 20 from swinging back-A wards. If, on the other hand, the pawl 23 is released, the milking organs can be brought outwardly as far as required.

Havingnow described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a milking-machine, the combination with pistonsadapted to be placed up to the teats to successively act upon the same from the roots thereof toward their extremities, of a driving shaft,a number of disks carried by the said driving shaft, each disk having two slotscommunicating with each other, one slot being eccentric and the other concentric to the driving shaft, lugs projecting from the pistons into. the slots, `and means for causing the said lugs to engage the eccentric slot, when the'drivmg shaft is rotated in one 80 direction, and for causing the said lugs to engage the concentric slot', when the shaft is rotated in the opposite direction, substantially as and for the purpose set forth.

2. In a milking-machine, the combination with pistons adapted to be placed up to the teats to successively act upon the same from the roots thereof toward their extremities, of a casing having holes through which the pistons project, a driving shaft journaled with. 90 in the said casing, a number of disks attached to the said shaft, each disk having an eccentric slot as also a second slot concentric with the driving shaft, said latter slot communicating, at its ends, with the eccentric slot, lugs projecting from the pistons into the slots of the disks, and tongues placed at one end of the concentric slots adjacent to the eccentric slot, said tongues being adapted to cause the lugs to engage the eccentric slot when the machine is working, substantially as and for the purpose set forth.

3. In a milking-machine, the combination of a frame, teat-cups mounted inthe said frame in such a manner as tol be able to swing away from and toward one another, pistons extending through the walls of the teat-cups to successively act upon the teats, and a number of slotted disks connected to the pistons in such a manner as to cause the pistons to successively move, substantially as and for the purpose set forth.

4. In a milking-machine, the combination of a frame, a shaft mounted in the said frame, arms loosely mounted on the shaft, said arms having oblong holes allowing them to be also moved at right angles to the said shaft,means for keeping the arms in position, milking organs carried by the arms, pistons movably mounted in the milking organs, and disks connected to the pistons in such a manner as to cause the latter to successively move, substantially as and for the purpose set forth.

5. In a milking-machine, the combination of a frame, a shaft mounted in the said frame, arms having oblong holes embracing the Vshaft so as to allow the said arms to be moved at ri ht' angles to the shaft, a ratchet-wheel loose y mounted on the shaft, pawls attached the arms, a lever journaled about the shaft, a pawl carried by the said lever, the different pawls engaging the ratchet-Wheel in such a manner, that, when the lever is turned, the arms are caused to move inwardly, milking organs carried by the arms, pistons mounted to move in the milking organs, and disks connected to the pistons in such a manner as to cause the latter to successively move, substantially as and for the attached to the arms, a lever journaled about the shaft, a pawl carried by the said lever, the different pawls engaging the ratchet-wheel in such a manner that, when the lever is turned about the shaft, the arms are caused tomove inwardly, a ratchet- Wheel fixed to the shaft, a second pawl attached to the lever, said pawl `enga ing the fixed ratchet-wheel to prevent the Iever from being turned backward, and means for releas- 30 ing the said pawl, substantially as' and for the purpose set forth.

.In testimony whereof I have signed my name to this specificationin the presence of two subscribing witnesses.

AUGUST HJ ALMAR LOQVIST.

Witnesses ELLEN LovEN, STEN ERICSSON. 

